Rotary valve for explosive-engines.



R. S. TROTT.

ROTARY VALVE FOR EXPLOSIVE ENGINES.

APPLICATION FILED JULY 19, 1909, 1,067,286, Patented July 15, 1913 2 SHEETS-'SHEET 1.

INVENTOR. 5. 77*072 A TTORNEY.

W I TNESSES R. S. TROTT.

ROTARY VALVE FOR EXPLOSIVE ENGINES.

APPLICATION FILED JULY 19, 1909.

1,067,286, Patented July 15, 1913.

2 SHEETS-SHEET 2.

WITNESSES: I N VEN TOR.

A! IORNEY.

UNITED sTAirEs PATTOFFICE.

\ I Ro LL-Al lD S.'TROTT, OF DENVER, COLORADO.

ROTARY VALVE FOR EX PLOSIVE-ENGINES.

Specification of Letters Patent.

Application filed July 19. 1909. Serial No. 508,414.

To all whom it may concern:

Be it known that I, Romano S. TRO'l'l,

citizenof the United States of America, re-

siding at. Denver, in the county of Denver and State of Col0rado;have invented certain and the therewith connected piston. I attain this object by. the mechanism shown in the accompanying drawings in the views of which corresponding parts are similarly designated and in which Figure 1, represents a-horizontal, central. longitudinal section through thecrank case of an eyplosive engine and the therewith connected parts; Fig. 2, across-section along the line Z -2 Fig. 1, drawn to an enlarged scale, and Fig. 3, a section taken along the line 3-3 Fig. 2.

Referring to the drawings by numerals, let 5 denote the crank case in which a crank shaft (3 composed oft; fist-members 7 and shaft members 8 and f), is revolubly mounted. The wrists of the crank shaft connect,

as usual, with connecting rodslO, the op posite ends of which engage the reciprocating pistons of the engine. The crank case 5 is providcd with cylindrical extensions 16 for the reception of ball-bearings 15, the runways l3 and 14 of which are respectively mounted within said extensions and secured upon theaxially alined shaft-members 8 and extending therethrough. The open end of the extension 16 through which the member 8 projects, is closed by the correspondingly shaped flange 17 of a sleeve 18 which is rigidly securedt-o said extension by means of nuts 19 screwed upon stud-bolts 20, or analogous fastening means.

The sleeve 18 which in conjunction with the therein fitted outer portion of the shaftmember 8, constitutes the intake-valve of the engine, has a laterally projecting branch in perfect 5 agreement with the movements of the crank 21, the outer contracted extremity of which is threaded to connect with a carburetor or Patented July 15, 1913.

other source of motive fluid, and the memher 8 base peripheral port '25 which, by means of an axial bore case and which is disposed to register with the opening 26 made by the branch 21 in the interiorof the sleeve 18, during a part of each revolution. The extremity of the shaftmember 8, protruding beyond the end of the 24 in said member,

t communicates with the interior of the cranlc '60 sleeve 18, carries a fly-wheel 23 for the usual purpose.

The length of the port 25 corresponds with that of the opening 26, while its widthis determined by an are which is approximately the supplement of that between the sides of said opening \vith'the result that during each revolution of the shaft, the valve will be alternately opened and closed for approximately equal periods and the explosive mixture admitted to the crank case 2 and the therewith communicating cylinder during the outward stroke of the piston.

It will be observed that by reason ofthe eontiguity of the ball bearing 15 to the vgalve portion of the shaft, friction between the latter and the surrounding sleeve is reduced to a minimum while the valve to the piston and the absence of separate parts, renders the action of the engine positive and reliable.

\Vhile I have shown and described my improved valve in the best form now known to me, I wish it understood that changes in the proportions and minor details of con struction may be resorted to within the spirit of the invent-ion.

\Vhat I claim and desire to secure by Letters Patent lSZT v 1. In an explosion engine, a crank-case, a hollow crank shaft having inits circumferential surface, a port communicating with its interior, a bearing on said casing for supporting said shaft at a non-ported portion thereof, and a non-bearing sleeve surrounding the ported portion of the shaft and having an opening adapted to register with the said port during apart of each revolu tion of the shaft, said sleeve being detachably secured to said casing.

9.. In an explosion engine, a crank casing,

surface a port communicating with its intefixed relation of the rior, an extension formed ,on said casing, a ably secured to said casing extension, subroller bearing mounted on said extension for supporting said shaft at a non-ported portion thereof, and a non-bearing sleeve 1 surrounding the ported portion of the shaftand having an opening adapted to register with the said port during a partof each revolution of the shaft, said sleeve being detach- StantiaiIy as described. 10

In testimony whereof I have affixed my signature in presence of two Witnesses.

ROLLAND S. TROTT. Vi t-nesses G. J. ROLLANDET, M. L. GEARY. 

